523140 has 24 divisors (see below), whose sum is σ = 1464960. Its totient is φ = 139488.

The previous prime is 523129. The next prime is 523169. The reversal of 523140 is 41325.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4300 + ... + 4419.

It is an arithmetic number, because the mean of its divisors is an integer number (61040).

2⁵²³¹⁴⁰ is an apocalyptic number.

It is an amenable number.

523140 is an abundant number, since it is smaller than the sum of its proper divisors (941820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

523140 is a wasteful number, since it uses less digits than its factorization.

523140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8731 (or 8729 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 523140 is about 723.2841765171. The cubic root of 523140 is about 80.5760504509.

Adding to 523140 its reverse (41325), we get a palindrome (564465).

The spelling of 523140 in words is "five hundred twenty-three thousand, one hundred forty".